En imágenes, la explosión en el hospital de Cuajimalpa, México

RONALDO SCHEMIDT / AFP/Getty Images

Rescuers work amid the wreckage caused by an explosion in a hospital in Cuajimalpa, Mexico City, on January 29, 2015. A gas tank truck blew up outside a children's hospital in Mexico City on Thursday, killing at least four people and injuring dozens, including 22 children, as the building partly collapsed. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read RONALDO SCHEMIDT/AFP/Getty Images)

Rescuers work amid the wreckage caused by an explosion in a hospital in Cuajimalpa, Mexico City, on January 29, 2015. A gas tank truck blew up outside a children's hospital in Mexico City on Thursday, killing at least four people and injuring dozens, including 22 children, as the building partly collapsed. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read RONALDO SCHEMIDT/AFP/Getty Images) (RONALDO SCHEMIDT / AFP/Getty Images)